Wireless mouse never needs batteries

What if someone claimed to have invented a wireless mouse that never needed batteries or a recharger? Yeah, we'd say they were nuts too. But Gizoo is offering one that does just that and even makes the claim in its name: the Battery-Free Wireless Mouse.

How? It draws its energy from the electricity in a companion pad that, unlike the mouse itself, does need a power cord that connects to the computer's USB port, according to Coolest-Gadgets. It may not sound all that useful at first--after all, you're still tethered by the pad's cord--but we've actually had RSI problems resulting from the use of wired mice, so this would make a lot of sense for us. Especially because we're too cheap to buy batteries.